{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2684",
    "entityType": "User",
    "nonce": "0x26fd8025be501d276614fe9e91e7bf1aea30a8acacfa0ccf3cefda64d94bd714",
    "signature": "0x455093d9b0db1252fabfcaff9af7763c8fb7a3b7b64c6014cc0329e8ed7b1f8f2c76e5ff1ea2dac6318ec2cee8bc076dfc583e44df5250c3411e34b18d65401f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}