{
  "manageEntity": {
    "action": "Save",
    "entityId": "1792858697",
    "entityType": "Track",
    "nonce": "0xe81dbbeae0eae06988f8861e38a46acc7b9a395e547fa17daf7907be5e4655fa",
    "signature": "0x1e3ca3e3584aed3c7c96fe631bc1f4ca0805ecc6afc0e8c7d7a3c16357dc10fd40832ae24b48d090a8bf2c165347dfac00afb73357d782779c2058aaa2fd344d1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}