{
  "manageEntity": {
    "action": "Save",
    "entityId": "1047046168",
    "entityType": "Track",
    "nonce": "0x1d0c1a4e14babd1ced488b7b5a775c22e07c192d958abbbfc14f322503f6260f",
    "signature": "0xbdb4334662dae34d09171c03a78cbb824fc82bb7919ad34dc93adc5cc5a0d8b316a0dc4d53b97c0014bb4ab8e6b9c2a7556c09854e54084ce4f512f22b1c82781c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}