{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1638916",
    "entityType": "User",
    "nonce": "0x527191dcc71f37ca3ca51d0e34142f09ffdba60519c832cf31e55ed157d52753",
    "signature": "0x6f55887ce250b454c27d4fcc645a1b3fcbd019b95078ce2bc45bbf2189cfb3c716fb29e1ade7f022465ba60db98d900195ff74cf58e3a29191dd55c2461db6021b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}