{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329034398",
    "entityType": "User",
    "nonce": "0x694838f41c823a80e65ddca4779af4b275216825e3ea9cd9108aaa6b4219e2c8",
    "signature": "0x16c68aebd36396e15a485784b9ce80805489c7c4572e8c1ef62f32f12c765804418b5d4a3502af16fb933fb38299d84cecb28a427f717eb3428c705c261de89e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}