{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3ee63db1efa8f4d822ada9b16c2bd0c580469165a3a423d893edff52c48353bc",
    "signature": "0x28ae04ebc0f2ae8e8002d12d81b2454d23d407c0bb7873e9eaec04c76a819ada5dbce308afa7f734694ea5bbed75e64ed096d7cffb596fa6546b54aab65b7cd31b",
    "signer": "0x5e5043f3Ee55b18e304cf2DDF8bc48C94131EBF6",
    "userId": "657680260"
  }
}