{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xac97baa9dbbc4a9ca71ac9132ee8ae67f0bd0141d74a4d43a24ac4e9525ff59c",
    "signature": "0xf068b69239deec903030729944e6988677ff3f119a47903ec2d3aa0d6f4918fc1315949a1f60fc0c7d7ef80498342dc75899acdc206aa9bd31ff6ee8eb844cb51c",
    "signer": "0x9F6E62DAd6Ffc233b9fBE5761e195A3784428B83",
    "userId": "447109881"
  }
}