{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508263176",
    "entityType": "User",
    "nonce": "0xe341c31f405370d33e183a2c0b9fb0b73e5919ba44f87926aff25f8c0ce3c919",
    "signature": "0xaf5dcf8a283b9dff95a4b635c49958c8a09f44016bbd05f32eea946d55a4b29926bba5c7fb52d9572924b9949a8048b46d1f103e85acd3218c9b3af6893953e41c",
    "signer": "0x08B2090b87D7e0840Ebb7724eFC1654DB45f6A30",
    "userId": "1696734"
  }
}