{
  "manageEntity": {
    "action": "Save",
    "entityId": "84972697",
    "entityType": "Track",
    "nonce": "0xcfb30a07b2930617a79ad2499d1fd76a9cb840aefd5fb15c5a07576dc29231c8",
    "signature": "0x5b2bf4429da218ee54a76ac05e00618cb94f6eb9d5dbcf21a6dede205ec702d319453486bc764bc5dd4fd6c07167742a57dc27e96a0ed885aad715c40e68695e1c",
    "signer": "0xEeea4f65FD2D7EffBC68176EAbe8544B088Aed57",
    "userId": "584616263"
  }
}