{
  "manageEntity": {
    "action": "Save",
    "entityId": "108788",
    "entityType": "Track",
    "nonce": "0xd6dff4959d1b1d74292b6e2860ff0c015a580636757a6971fb58616b14d86bbe",
    "signature": "0xc0b0f32f586659790ad71549a9f137369b8b7f8f674655c85de645b3dd81dfa97f922905875d88772a7bd243cc887a958800ee12d4491ccae3165c2d90d75ecc1b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}