{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x49606ea3016a29898dec0dbfda9ffea4bce6fa958381cb971ff9f85b96e5b035",
    "signature": "0x15ec35a6ced2e37d9d2174435f5d0f37f45c955f02346d08e289958a2ea320bf72a6db925221cff299fa6a2323ec3f8c0fede0844f5e9fb2041c0a63e2a5bdaa1b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}