{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345493",
    "entityType": "User",
    "nonce": "0x01631137c27b4927f3e5c0d56edfa273904e8ecaa02abb299c5503369584add6",
    "signature": "0xe6f979b3147463e5684c0c383cb8b040a544b8a97a936b9901e058f72c00017c431032d2fad95bfbc53d8e85206b789062705c6fa547d7cfb21beb0d37a56db31c",
    "signer": "0x585E1741D553166698Cd60709950BC8c9B0a97BE",
    "userId": "984791554"
  }
}