{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe777581bbcc8236c4cd11caa31f99cebdd41f447562ee6282f2c4df8603ca93c",
    "signature": "0x04853e1863d75cd1de532d8a66e3fe52828aba37ccb97384b566af32d818086f350c6429a9693e6b914f36e038034bd734bcf0362f07f66076532d716fc7fa121b",
    "signer": "0x99e0F0bDa47112Bab3a60EcA21013B61F918DD33",
    "userId": "83423182"
  }
}