{
  "manageEntity": {
    "action": "Save",
    "entityId": "58497",
    "entityType": "Track",
    "nonce": "0x589e190021bd58eeafecb75b36024040ac100afd6c57de3ac15db71791c9b48a",
    "signature": "0x60c2d801806acdefadbf54766c1d88f1b2ba7f4ae94b3ffc1f4c55de34ecd5bc4d66f963888c97614088c8eff0363658b3d7f1e1bfd9743070460bd5704855f31c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}