{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xc8314072293d4aa395ccae72701aaa2c3e49859f4579df69c010e1cb6524c29c",
    "signature": "0x624187a898fbd32eba224fb46361e627de1b6b327ef7b101774e0be7f5f5722204ccda736645ae638e96db76473d9b70cb8138856a2dfdfb6f0d9ce351e797a71b",
    "signer": "0x7B499405130cFEFBBaec9980A9E37BBE42E8589D",
    "userId": "633494619"
  }
}