{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4a430724c7f39c73118feb48b0fa5b79c81ce51e81dfa3275546febd9a343237",
    "signature": "0xef53ccaed819aedda311ebccdbf20ffbc9eadf926c17bb86d0ee4dcc6b3601e57bee6244ba31777fc466b5567a96b5fc0cede4b83cdb86f3aeab2f22a37782531b",
    "signer": "0x9d22Bc23fBE98BFfAF5aaEb9ABd40675098B7Ca6",
    "userId": "912985104"
  }
}