{
  "manageEntity": {
    "action": "Save",
    "entityId": "1134195943",
    "entityType": "Track",
    "nonce": "0xd65ec1d1e4cbab20ba91038ce0785ee77f54e361778acc3ca2dbe3e426ea324b",
    "signature": "0x570911eb4e3f41bebfa8cab3546c6593ba19ca972ffe818f25487f1e84d1d6fe2320ea69c2e89b84f88136bfbefd3722f74928dc57bb53f45cf3757e6e05e8671b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}