{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4ab48abcb98df5f6e5dae562e2f49f342c1012d9cacfd63fecc44ef40ce9fa3d",
    "signature": "0xdaf8e2d1f4d90603d1cdd8bd05d878528202d424085ca5d89bad3f98b4833c7557434078b4287e39554c66ae994075a3dcdd3d4798fd05d7150fae5c58673d431c",
    "signer": "0xc4BC0573666ff65D6CF1cE91D240821cb0819d2B",
    "userId": "733050330"
  }
}