{
  "manageEntity": {
    "action": "Save",
    "entityId": "1359360678",
    "entityType": "Track",
    "nonce": "0xb97f3090ec904431f6603fa292134b2d5f437284e117370a5d73e3b0d8878a9a",
    "signature": "0xc521e5e1bc66f84e75c6f1b99aab31361bef22188686e54ac97c9741de8e9a4c66e3e89211c50b5b0e8e9480d4033cb6f67adaa720acf47a42dda10f087647c81c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}