{
  "manageEntity": {
    "action": "Save",
    "entityId": "239747965",
    "entityType": "Track",
    "nonce": "0xa35b65cb41a1cc5df18ce4383379005d2a8b730de2cdf5a27b42a103dd7c7248",
    "signature": "0xf6eed1b823ebd2208864b01a3b25a6982255f1ce0478c3a4f63cc18586d803b864db2b1607bfa32dc6baa063a8f6307d88891131b3ac15272c3574332be0d31a1c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}