{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "30849355",
    "entityType": "User",
    "nonce": "0xc97ef944f4d3fc3003273bb52c90e67f7998625064ee1b7215204cb27c3d5fcd",
    "signature": "0xaf94dd67d1613fc78f7d14b8f7312e672c08679902c2cca4c8eec15af829c1cd2a031b2c36dd46f31e71b92d823808884f7dc11397519fcd2bfd2119e72689c91c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}