{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "296416521",
    "entityType": "User",
    "nonce": "0xdb48b06cfb8d0a45e7cd0d2c459d00488ec0c7c18efe40ccb2abd1826d881201",
    "signature": "0x27030136ff0a8de29feb45122ff8ab0c8a32ea2acf0c6c3867acfbb36b6a3d19739b9785eb8c4392d9ddd35bc9e31d1659c89a6a816f1a914c1d2d0c031f280b1b",
    "signer": "0x5156122E7f53a879786546b3133306b9F7814b9b",
    "userId": "781663071"
  }
}