{
  "manageEntity": {
    "action": "Approve",
    "entityId": "1850456420",
    "entityType": "TrackCollaborator",
    "nonce": "0x00f126d07e264c1c5ecd3feb898ef34b324fcbc4162c37c6e2b3ffab86da2587",
    "signature": "0xa1f47feef6be7a6ef16cdd681331e3863866f524a3797449bf1fd4ad65493c410bab7e6cc7b584b362e16a7d024a8c41d5091fbeb11cc55a2b7530140b07d1751b",
    "signer": "0xCDb8F390F2d5D6a1687a289dFDE48b06f3403872",
    "userId": "176094510"
  }
}