{
  "manageEntity": {
    "action": "Save",
    "entityId": "2107169195",
    "entityType": "Track",
    "nonce": "0x5fc5d00fc2f130f1fa039285593294bd4faab444446cb520d3ab35c6e3df1d7e",
    "signature": "0x89e72a6ba70286b66cd2a15947cb6c1b1abbda0fa525ff5a082c33009545cf732540804ca9cd035dea4bb146b377099cb2a2a32e295a52bb7728dba8e1eb32f91b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}