{
  "manageEntity": {
    "action": "Save",
    "entityId": "202235887",
    "entityType": "Track",
    "nonce": "0xf35bb661c1308f4c728dc0de8f393a92109ffb96ffdcdcb6f9355337e0a86af0",
    "signature": "0xf28b79633aa24cabcd8bacf746d0f7c069135f9caa51982a6403f9657461c3335456621086499065fcc52316dca86c02c3ae82937d1d2b39ff9ab60d26f887e51c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}