{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1481230",
    "entityType": "User",
    "nonce": "0x35da0e0f1b131fca8a4f1d2c1b9d6892196d5221080eeb3581bf13fd41e87114",
    "signature": "0x6d1abb73b0e1d479a16c8d5d7ae91924dd7680dc8f8eaeec2189994af53c032c1e4b6e1b881aa0a3cd9c0016d5ba43145e9232d25eb6c40808e6ef4c3be819471b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}