{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x7b6cd91fe65ee88a90eaecb911ce34f02beb2c3a6c1556f4ffd780136ee1cdda",
    "signature": "0x43d25428540150f76f7ea9cce1b02e2b70cbd0f0c7d922ed8757afbb643a7432127e72625da389fa02ca8d7e8202eba0f770aeeaedeb35054756659d7487c2031b",
    "signer": "0xa7B72be225A796b97FD34C11f9D57337bb58B341",
    "userId": "883910521"
  }
}