{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987235245",
    "entityType": "User",
    "nonce": "0x6dd4f60e3323cdc989eb1a57a15b55715d07ecbe335a7dae831f98b3ce6cdfef",
    "signature": "0x931f789941021c374f0434851d3e061b471e77ef0afb2d20b2602a3b8d0fff9702adb687cded2d8ec46234d248e91dc92cc5006788b0138c954f794b22f135381c",
    "signer": "0x5c51216FbbB9B7A562f11267f91f72A7be1e8DE3",
    "userId": "105826"
  }
}