{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc6ac6af7d650a804e5d2969ff6225a0bb9b64ba16c7862830909fbb249ba6067",
    "signature": "0x4b91bc7acd0aaa69331dc7ece30a70f649f7efaaa3b96abba80ea3d89c65af1c3ac94d41be90940af3a253ea1063b7398639fdfa45bc32c99907c6f453b69f651c",
    "signer": "0x57bDCD89631d8272D84407111C8746081759E553",
    "userId": "632736002"
  }
}