{
  "manageEntity": {
    "action": "Save",
    "entityId": "313937",
    "entityType": "Track",
    "nonce": "0x8b6d2faaf1c5155fc6b94aa127a0ff6ff456a7cc54383c40303004f331add939",
    "signature": "0x6fa5859cca93e09daf6f86851a46e3f0f644d5c6c4f64dc61a2338bd17d82f4a78ad537bcbdd315182b694a67c17e9ea63a8892920417e92b2e4cd42bde512be1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}