{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "294",
    "entityType": "User",
    "nonce": "0x30d2cafcfa8b3b6e7a3de86e50969031ec8a5819ccf90d68ff060d1639d400be",
    "signature": "0x7353535990d039e535f93aedd04ddf27a5a8b0206a146a07aa86a01adb8fd77a4893f37052ffd107b7051510810f051fd2107a62ceea43c0ffbf9ce17b48be831b",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}