{
  "manageEntity": {
    "action": "Save",
    "entityId": "996100670",
    "entityType": "Track",
    "nonce": "0xeb0660c3a04ffd0fe6f09d8a3fb854d4539443106757a18fb9d4941dcf04441a",
    "signature": "0x695c8b21585e0637c70f33545913300fb3f1f9d254aaccd008733c061a95f9b84f01c28c0bd47948c57e957345a9fdb74303e1ccb4d5dcc02de8b01a8e7ffe1b1c",
    "signer": "0x76433fcfc10E04743aB4EB98660d4B47526AD243",
    "userId": "328228955"
  }
}