{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0x04da02d5b39481775f6d5eba0c1000c4fd4b1aee3986e08a17cffed0b1ae9ba7",
    "signature": "0x747acc3625051686849e1601f6dbff1f19227065fdb0f0d52d45f2b6fa4dd87e4f0d8bcde86096e7accf0a31b8e7e9a9db3b7a55dd1a6c585f9ca6351812da971b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}