{
  "manageEntity": {
    "action": "Save",
    "entityId": "1787948928",
    "entityType": "Track",
    "nonce": "0xd6f69f6bf3bc4775cbd51c57c71522b91274b493ce845c30325ae92b42f81b58",
    "signature": "0x99b0722caf465483278226b419c51d80c667e86f320b3677f32ff32666733ebc61d51b87f2f47b25dff2991def9e30620ee98dd14e27df28835fcfe0f43bfe601c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}