{
  "manageEntity": {
    "action": "Save",
    "entityId": "1985882163",
    "entityType": "Track",
    "nonce": "0x29a8b397fbd61c16669a43e142e8077566f87598f0acae8ea4f1694f049c1b11",
    "signature": "0xe510ac4fb762451baf2d1513f10e9d6e3a673378dbfd30edce10ebba09cea9fb381f1eac9f7a899cf424eb14ffcc4a49a2f039efd1b55fe91e4518165d93ca251b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}