{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5253",
    "entityType": "User",
    "nonce": "0xe56d4c44610ef48630e629e792465d71a7862e12a248c63e0893146113a19ce8",
    "signature": "0xddfb4aa481598c8225bd896a20a85ac26dd5a5b585fff55a301248ef74c880123ae270e73991c1bf8c60b9aeff9ab4ae2a9f7a964198e8831a3a0d266dba889a1b",
    "signer": "0x3776E1D82Ebf03656FA9D03C18fd5B58D7Ddd337",
    "userId": "83331354"
  }
}