{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x789c29fd35666c9444db4fd1516189223d883808f26bac5aa0904fc77474105a",
    "signature": "0xcb64ec5b8698e13169318ee38b91b4b0d3357d533da8ba2a14f74a8f868670534845fc296d598e693fb6f7e2b9bc5dd899dac0155cfa1003f3da959a1c4f6d741c",
    "signer": "0x52Cb91F38E0558Bc7C3b3F9e2A6a4f8AA31f5d5a",
    "userId": "129460210"
  }
}