{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0x105970bd9dc9819f911c39ca4eb8bb6fa1e2d5e8320096b9490faf01303f6717",
    "signature": "0x795b23a1033a557770aa6f6c51f258b0fe04be47715cfd992432c949fc2126716e3163ecd35982b48db3ae7ec04f4bb6aa792d0be968b45184ac9bff0e4a53fa1b",
    "signer": "0xF51BBf2D093bbC94555bc2299Ae53Ce8F7963374",
    "userId": "38277"
  }
}