{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1b17621590b44e89fac104236efacf42bc05eab8e1fd4fc581022dcfdecf26e1",
    "signature": "0xc90059ae0daea724da77ef174178dcd2917256ebcab453b22c9395ae5b7f564c796a4e7bf9f20190ba6d8615b32e0a3aee6880261382e4a45c1174c1c1e304291c",
    "signer": "0xb0230F73eEE0dC8A10a7a1F086865e2458A35e22",
    "userId": "147442703"
  }
}