{
  "manageEntity": {
    "action": "Save",
    "entityId": "1084198738",
    "entityType": "Track",
    "nonce": "0x0d4d5e3f461c9d6ee7d8a7daf046abaf37439c310f7848f911a61bcec06bb8e9",
    "signature": "0x8ea8338b5ba4bdb19f96244fe111d03b0e869fcf31fc05913911e3027e8e90d429d0a4a41d501416cc0afa9a572f7e889dfe9beb1264245ce27d2ef001651a591b",
    "signer": "0x326CA1756d3c5F6540Bae1A21EcE78481b3b115C",
    "userId": "127591928"
  }
}