{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1b0903c0f2659a662db66e1215bb32ee16b5dae00ae4be20397ec1fe0caf8e0a",
    "signature": "0x6ebc48ad87b566b3f04818015d5ec33fa560f5de459c0315a72d85ddf06df04a42884c2495a38d70af4b8f5a656d5da4a9ff0e17757de60b38eb51a8225765cb1b",
    "signer": "0xe7cf0875B98A0048424DbADB6510a76E9eBE6C9f",
    "userId": "21915114"
  }
}