{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x8970cc907add2da0900fa19f0cfabecb4c78794f660a96ca99d9254c3688a208",
    "signature": "0x02e09b6002552120ea9d163c7db4a4495d9f09f8f88cd3b35782a99fcaf761c1444ea7b11c4240b1c74304d999b96c405008574d3e30913c41aba6f13a6a54341b",
    "signer": "0x52cc4CaB8B88D4A10D7E6Cd27e0f7f36f5e7B782",
    "userId": "462161762"
  }
}