{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0387d5b744a575a53a5d5df41634368abe9d6118b953c7e88ae8459660813f46",
    "signature": "0x72e64e81ca60c166fe8c159417c116974403dbbd0a8361a126d23ee194e84c8a6daf5becf5ce929992b6aa01b8e1c0b935ef651346f4acf5a1841a9bd7e8ad461b",
    "signer": "0xc41a2793553c2dB6040EA2a8236d996517266741",
    "userId": "825416560"
  }
}