{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xbb244a04d5e7a66bfdcb42fd545e2d1a3f1bb1278a6fc212c9889372e94a5a9b",
    "signature": "0xc3df4d1108f590808f1e7288d4b7d52691b31190e7ec44d82589dd52bf83513e39b9dd84cd2b874e696eb7734439cf707e1fd80f13428c8e02c67c7e70be93fd1c",
    "signer": "0x7FCffbc9FB7516A6453F59c5b9918Ea8A7EB33eb",
    "userId": "502388335"
  }
}