{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "820616115",
    "entityType": "User",
    "nonce": "0xbbeaeb1bb4bcf0b515869a9e0448f5e4dc5fd57af759ed75adb5eed5a805121e",
    "signature": "0x67b2590c00ccdc6c576e551126ec1001a3c3ec0114450b3c7122b15188db7f4a6162ecb52e25f34da91801bddfaf7392af72b6fb6a2ed444d5b795885d2270921c",
    "signer": "0xa1F606584fdE30bB7d4BE2EbeC98A5F95E4559f4",
    "userId": "786922215"
  }
}