{
  "manageEntity": {
    "action": "Save",
    "entityId": "1286263620",
    "entityType": "Track",
    "nonce": "0xe6d09a13eec421c083cd7f039739e1e257bb6ffefa3aa399804adc6423a46a92",
    "signature": "0x630a470719ca44b329e00cbee39aac9aa40a2ebfdbbc95075017ea759d48d72336f26cc8bd638a396cb057a381d08b138fe2b9ff8797f7c302bcd5b7b03424ed1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}