{
  "manageEntity": {
    "action": "Save",
    "entityId": "1830333785",
    "entityType": "Track",
    "nonce": "0xada240c23640a621accaf67ea288e6888adb7d6071031d5141fac4e845ab9162",
    "signature": "0xe74c0fbfa2d66eae1ca4f587c9d74a54b4a4d7c71b177f8891ff14b027b5c9b30ad6fb228570852ef3123ec5adb7928010b9e20d44d46eaf4039ad3215facfe21b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}