{
  "manageEntity": {
    "action": "Save",
    "entityId": "1180460129",
    "entityType": "Track",
    "nonce": "0x2489d469e206fa4c3d4731ecd3a03694ce6d01fcd1b00adf00c327a4a565767f",
    "signature": "0xf20c3eb770b259da574d86aed59128183227616af20fa05ae09e4e47c1ab6d33602fd5b6367d03073394329391b59e3076ad213ea6fe8751eae9e4070b9310de1c",
    "signer": "0xcdc1772589e70ee6667FAaC93E3F0CcD5BFDa2aE",
    "userId": "354908"
  }
}