{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa538b1e5a1e0774b07e040fccf0838a092aae42f11a91ff5c1e21ec33bfbf62b",
    "signature": "0xdc0a9261971975d7810e8a0caf1d09c48fbbe38f984e3fef5952a0f8ed4af13947239463286d682a4e42ad65fa6f26eca979166fd939c96548ef251f0bb3e0181b",
    "signer": "0x6c8dCBC19B550a5AC69fd394bF83e9824E7a6605",
    "userId": "528352645"
  }
}