{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4638b0c6cf03bb8fa1f9de896c0a2f645caa2fdc8781c672c936530d6b09e650",
    "signature": "0xd12eecaef92fd489278d7a8ab77fcced000a70e4e733f024021981b44effe2d87ddc0d836e9440d0eef2f0cb922af5ece269acd58731d166a54db79b91aedebd1c",
    "signer": "0x38F50a3556340c9E1365557DD31F3549c0315FB7",
    "userId": "912674314"
  }
}