{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaff5f8aee66324f0dca3206534231e3dc647daffe7e258bb386cf05ad19341fe",
    "signature": "0x858ec0f6c10a289ea038f02ce6ea4b05c829b8d949debaa1a032963b606fbf297aaf14bf8b8ae81a3c6d5b3a98f5cd06d1b0f6264536aa701da8156a4ec5976a1c",
    "signer": "0xF7DBe9b843E977E69B3b4D2f71522339fe129359",
    "userId": "624790304"
  }
}