# Join a campaign as an influencer

Join a campaign as an influencer. Creates an auto-accepted participation. Requires a valid JWT access token.

Endpoint: POST /campaigns/{campaignId}/participations
Version: 0.1.0
Security: bearerAuth

## Path parameters:

  - `campaignId` (string, required)
    Unique identifier for the campaign
    Example: "campaign_abc123"

## Response 201 fields (application/json):

  - `participation` (object, required)

  - `participation.participationId` (string, required)
    Unique identifier for the participation
    Example: "participation_xyz789"

  - `participation.campaignId` (string, required)
    Unique identifier for the campaign
    Example: "campaign_abc123"

  - `participation.influencerUserId` (string, required)
    Unique identifier for the influencer user
    Example: "user_123"

  - `participation.participationStatus` (string, required)
    Current status of the participation
    Enum: "PARTICIPATION_STATUS_PENDING", "PARTICIPATION_STATUS_APPROVED", "PARTICIPATION_STATUS_REJECTED", "PARTICIPATION_STATUS_CONTENT_SUBMITTED", "PARTICIPATION_STATUS_COMPLETED"

  - `participation.contentSubmissionList` (array, required)
    List of content submissions for this participation

  - `participation.contentSubmissionList.platformType` (string, required)
    Platform where the content was posted
    Enum: "INSTAGRAM", "TIKTOK", "FACEBOOK", "YOUTUBE"

  - `participation.contentSubmissionList.contentUrl` (string, required)
    URL to the content
    Example: "https://instagram.com/p/abc123"

  - `participation.contentSubmissionList.submittedAtTimestamp` (string, required)
    When the content was submitted
    Example: "2024-01-01T12:00:00Z"

  - `participation.contentSubmissionList.postedAtTimestamp` (string,null, required)
    When the content was posted (null if not yet posted)
    Example: "2024-01-01T12:00:00Z"

  - `participation.createdAtTimestamp` (string, required)
    When the participation was created
    Example: "2024-01-01T00:00:00Z"

  - `participation.lastUpdatedAtTimestamp` (string, required)
    When the participation was last updated
    Example: "2024-01-01T00:00:00Z"

## Response 400 fields (application/json):

  - `error` (string, required)
    Error code
    Example: "VALIDATION_ERROR"

  - `message` (string, required)
    Human-readable error message
    Example: "Invalid email address or password format"

  - `details` (object)
    Additional error details (optional)

  - `requestId` (string)
    Unique request identifier for tracing (included in X-Request-ID header)
    Example: "550e8400-e29b-41d4-a716-446655440000"

  - `timestamp` (string, required)
    ISO 8601 timestamp when the error occurred
    Example: "2024-01-01T00:00:00Z"

## Response 401 fields (application/json):

  - `error` (string, required)
    Error code
    Example: "VALIDATION_ERROR"

  - `message` (string, required)
    Human-readable error message
    Example: "Invalid email address or password format"

  - `details` (object)
    Additional error details (optional)

  - `requestId` (string)
    Unique request identifier for tracing (included in X-Request-ID header)
    Example: "550e8400-e29b-41d4-a716-446655440000"

  - `timestamp` (string, required)
    ISO 8601 timestamp when the error occurred
    Example: "2024-01-01T00:00:00Z"

## Response 404 fields (application/json):

  - `error` (string, required)
    Error code
    Example: "VALIDATION_ERROR"

  - `message` (string, required)
    Human-readable error message
    Example: "Invalid email address or password format"

  - `details` (object)
    Additional error details (optional)

  - `requestId` (string)
    Unique request identifier for tracing (included in X-Request-ID header)
    Example: "550e8400-e29b-41d4-a716-446655440000"

  - `timestamp` (string, required)
    ISO 8601 timestamp when the error occurred
    Example: "2024-01-01T00:00:00Z"