{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1b8073905f53ef182aae63b35e22a492dbf9e50afaaed63273c3a6654039562f",
    "signature": "0x7bc3fcdb16283f0818b053a35094d08c56c66c99267d9768451691799bb8daec617663f03de9392645c8ca7d957f8e18ff80be3fb374d009ea9e2e00a839ee8d1b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}