{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xee5a75d99cbe1f1ea3b1d73c05c6a7389e39d38318d1085a3d37b0739148410f",
    "signature": "0x7123fe5ec87bd406ae2f66c13cea7277170590375c3fc7c524355ee3af3c21163b158516b16e3e243ddeaaa00602653e12149e68fcea597694e7b17b29097a6b1c",
    "signer": "0xC3D7132e0492acFCD48339ED8998A1E34E575134",
    "userId": "820257716"
  }
}