{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "378710",
    "entityType": "User",
    "nonce": "0xa574eee66e2d24ea244cd16e6fe8f226aff27986a6de0679bb0879b2e8321e47",
    "signature": "0x66b7bf8b8c3a8504bc5db09c4f1d77a44bbeb46e260c47c9f1da50720b5482a863752ea54bce22907b0d2024449977391cd5a382c8e92f4d195e5ebe276af3451c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}