{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x55fac212475568cb2ea1037b1779661c8ce704d1c097a3a911dd73ed4d334376",
    "signature": "0x3f3ff8211bbb72414dc385be277c99c5d1e60f693ace8ed3d8b89e58d63b91f55b785eab4ee9ec6988893f0eb0f468ffa03150937641e03e5f46f8a281af544b1c",
    "signer": "0xa568e0f808c5B9E7C3aBf719dfA04751be8A94CD",
    "userId": "545790265"
  }
}