{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "771255350",
    "entityType": "User",
    "nonce": "0x05916fc3c2c30949e43ca59517cabd5bed2ab5231a359adb2c66de570e213368",
    "signature": "0x33b1d8e0b273f29f4eba6f31c6724a1d488c257671d092ccd0c8a4e5dd74c8a10b1802114de3d3c9b2c358e459d1a1f6beb3e29f81950e745f72f54b2b03aa3c1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}