{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389016497",
    "entityType": "User",
    "nonce": "0xacbc0880e7598f4d89076540862845516a1743d0356cbef5dd7389b04b3144c5",
    "signature": "0xc31eee93018c15bff54cd74870132af493ebaa576fc53361baafe28949b6731635b4c72470de78efd3527a779d43afe2f4d5f8e1509d5b979a21b2e615e2ff9c1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}