{
  "manageEntity": {
    "action": "Save",
    "entityId": "1477432497",
    "entityType": "Track",
    "nonce": "0xfd1706003334cd8dfd2dfb252101ee6d04074f4f58089e1652db26c221452795",
    "signature": "0x5bee9cdfbdb0e8ea46706945ea1fe40728880ca3ba43de22602595eed9bd74f25c0f64cc07e7e85ac553149f9e6e30f92ce2ca2bece22f0204b35d36f12765d31b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}