{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3619a6cf837b276d8d6f375653c5f084d9cd8b6352aecd97c61182e608508653",
    "signature": "0x91e18ce74c3f1eb46639cc083ef422d151b933bfeedede82424b28c15a4993a5084d4d79e7c2425db74aee197fdc077f75f8e5c7babaa63b3ebbda0fc035c8bd1b",
    "signer": "0xA8a93e152B887d3f45c0817b25A7E66C4De088F0",
    "userId": "155730519"
  }
}