{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9ae28eecdbac59e4817709b751a19feffacdff0c977b30aaea6d49fd0d7162b9",
    "signature": "0x2f6259c8d40480068a06537ab4a428bbb0193cc33b503ba6aed2d3bb92581e0604fe5f4f1331fa0707bc596fd284f8f4d3c723e36fdf5248862c6594881767511c",
    "signer": "0x48224d763232C471A18fB859BBb17f8aba265236",
    "userId": "261912630"
  }
}