{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x70001d08c90a07215dfc41ef895898f8bf6dfe8558805a847c28400263eb2eed",
    "signature": "0x6b3ce8a5611eaa771c7cfd667ff39575aff09a534dd05ce94dbcc1439f3f81853e2f86f2e7a9e289d66bc51c4e0ba149df7719133d591f4e2524b5f283038d761b",
    "signer": "0xfE67ae749e8cD3739D6b23E6fbD113C370b34d7C",
    "userId": "781075871"
  }
}