{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe497a0d493b5941355d510179d2dbc852ebba710fb0224d2f72ff648c1c3d857",
    "signature": "0x75155d2f018aeec1b66e9870abbc00e13dfd78a34fcb54a8b210951f8091c2590fb12eb79d5fef42c729b81322eb17773b2ad3b1aa79b65dc904b80968cd81ac1c",
    "signer": "0xA37F18aB158e689Ac6955f6767232C266f9f35b9",
    "userId": "498040175"
  }
}