{
  "manageEntity": {
    "action": "Save",
    "entityId": "1107311",
    "entityType": "Track",
    "nonce": "0xbc2c7375998b7bdf00b200fd7001b8026f640acf56cd1b6154d7a676c9005b1f",
    "signature": "0x0049f080aff5740e463188af779f4fdf201469167ba56cd3e3f0e3c419067ff528c9b6fa69cfd3a38473c3aabb2d875e94f1ad2fcc0bcaa6240203ed7f7ed0101b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}