{
  "manageEntity": {
    "action": "Save",
    "entityId": "1102129",
    "entityType": "Track",
    "nonce": "0x42f1699406ec1323aa7b7c1ef956976b0283df1c5e12c1e6b5a0c6aee1c0eb00",
    "signature": "0x3732ce7eb2f692718063d92948241dbf7abda89f9b0c8398ff30cf54641e81c230341659be92c6f0264d3220ed4c28c8608ea2b9f4088dbee7146e1e329ce76d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}