{
  "manageEntity": {
    "action": "Save",
    "entityId": "1020055487",
    "entityType": "Track",
    "nonce": "0x9d735c25270d4790eeeee218bb5a46ef358af86ace496b81ad767a9a2de79ef0",
    "signature": "0xf328c94db843e6c68a52f8bc14f74223da282760dcf64e0f975dffa83a05f3bd1aae1a63a5bda7bd816e78ab6146bd1640fe136e7054b49bd8342f97c94528971b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}