{
  "manageEntity": {
    "action": "Save",
    "entityId": "1700506954",
    "entityType": "Track",
    "nonce": "0xac6ccc9a641abec572e203c49f0fe15399757df07717e47ef9dc76c0535da7fe",
    "signature": "0x699073e9b6980a2019af350398d35a00cb5b4d87d2282eed68d48a153f4aaa742d0369d2bc2bc4d3e0156903f24de6e22c0b62f2b291f44786a68cdd20e835981b",
    "signer": "0xcdc1772589e70ee6667FAaC93E3F0CcD5BFDa2aE",
    "userId": "354908"
  }
}