{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "464375011",
    "entityType": "User",
    "nonce": "0x17ca533edbf65e425202e25baec8ba02fdef02f0f70f39d8276932bf19ce2db5",
    "signature": "0xcb65a5f0ee21c5aa62e638423a77f768c8c07517efd7ed4f851f2dbdc83a067b01e1cea5227eeda64ed0b4a90b5426cd0dee1ab3bfdc73ec75e12266d45c50711c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}