{
  "manageEntity": {
    "action": "Approve",
    "entityId": "879139444",
    "entityType": "TrackCollaborator",
    "nonce": "0x5524eace61c4bd7288d44c6865fae04aa12edd1abb284ec5c5c89a370a9a4f61",
    "signature": "0xf4113fd2223c2a2c71e5f804407bd744472856e817cce786063acc201ad0b71a0fd0b9aedcb2669d392ef032e2a9854c8dcc7a34a87bc9e93ff047367899ce331b",
    "signer": "0xeaA7504797830c9585c212dCDAF6A038FF16E2D5",
    "userId": "791380112"
  }
}