{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6bd31a21a7d82424e953fa97b5efe63aeff18a055c2ebb8648b543e85e0b506f",
    "signature": "0x476b6f4eb9bee4b4cd5564357e63359ecf71e85ef7f2525060d4079fbc1888af0bfc9941dfde14d4aecb9df4fc65ed24811fe33b39d43acd547a251722be0d311b",
    "signer": "0x7B499405130cFEFBBaec9980A9E37BBE42E8589D",
    "userId": "633494619"
  }
}