{
  "manageEntity": {
    "action": "Save",
    "entityId": "902944560",
    "entityType": "Track",
    "nonce": "0xc811025c4690fcb1f1634a311688817cf05336b11d95a5b3ae358b6e2f0cfb44",
    "signature": "0x9462d0f81701e6978fb648595405689a7540192a4d8ecfe886abc47cf95cc4e006e1ea9b1986c027e0a2efa0a6139a6905281025b1f29bd98ccd3719cf1009191c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}