{
  "manageEntity": {
    "action": "Save",
    "entityId": "1810527396",
    "entityType": "Track",
    "nonce": "0x56326f604c291599286be6654ee5edd34867daa16950365c6b2370149585efbe",
    "signature": "0x608fdad9eb6bcc0411d2bfce414bfca8dc0a1d948ccb06eacea7380c0910ef5067ea56b30706a81bb11667b6c3d64ed3d70fef0a6dc7bc65f938033388e74a591c",
    "signer": "0xd1bC12b8b46f2FAa152aB791052b4a26826F86F5",
    "userId": "481080235"
  }
}