{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "310796",
    "entityType": "User",
    "nonce": "0xb71b05c6b65cafd0ed9c99a421e0ed2273e9bcb5ba46146e329d495a58860994",
    "signature": "0x4ba3f194469ee9cc3623e1a37d785226d6a22ff27e45e0fba0d3d28a27aea276746a8acbd16ab07451c70277a263b57ea9cbe0329c0045526aa690cf5c21545d1b",
    "signer": "0x9eC0D65bE243B523Eab5490166b6C51c58309FC3",
    "userId": "621139412"
  }
}