{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9b14a6ea1601f7d1ddb7fc8e72193e72a006e6082afadf689565f0a787ca0c12",
    "signature": "0x21eb2f3db22cc4bf14bc5aedc8348242285d02bc8e758f0d9417c171b26e54a475f44085695f7cad99bd8dfc61d30d9eadf1b01d4090ffadcdbf94cd3eb581881b",
    "signer": "0x7e7c4e740Cea733165163E222982F54E723Acb3B",
    "userId": "156619761"
  }
}