{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xc4a3223dd707eedd4187e0f162f0056e2ba756178953b4b36c23c1d2114b8c76",
    "signature": "0x9b7296bd09f5f35c0a659df2bd11227708409286db1ea23351e5208153210426669116407a5b0cb3dc5b47b6489142f455c221cad19cbe4008bfb691a78073361c",
    "signer": "0xb001DCb64Bf57b3EcC76C4Fe5AbfE2a8B084D6ba",
    "userId": "641557420"
  }
}