{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "844754103",
    "entityType": "User",
    "nonce": "0xf51147e725e43940b52a1004bfbef0e2f6616695c3d6b71efaede369be6dfdb8",
    "signature": "0xe750493717cfb5b8c06b41533f8b6a9e042fc7b671e31ec440e7d4c79102270c4f693b3a415ece9ddb0b64464720b23a8206b9a60c06646c7361112e12f7c33b1b",
    "signer": "0x641D58d14cccB895cC85f210F1CD2B998A692F67",
    "userId": "308555958"
  }
}