{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4443",
    "entityType": "User",
    "nonce": "0x2361429bc0c18b55b6c4baf4d25be9c36a3ff7044d33fbf6b63abd815aa22f86",
    "signature": "0x929f79e5aeb6ef48b076beca70b4c3c7ca40d0e4f0506dd93a7a8a4c654b48ec4a21d31a1df842d19a2f3adbc1d455445933706fdf52450315eea0a6164821771b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}