{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x44c4c7639b72568388c1e7418d8e0a04d047c2705da3bb0beceb1907a019bd27",
    "signature": "0x38f8eda85547fa2193024cba2c31943a8371235609e1e3b453f3f352e99849b246724b857a11164a764fe646ec96b8092113763c1ef157f98663629529b5c72e1c",
    "signer": "0x06902ed62bf3DeB2BA8Bb75F08cE93c1E87A7Ec7",
    "userId": "789121538"
  }
}