{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2307d52387d5b4098f8912d99d9ac6a957cea7efd72c6ba845a8e50565508b5e",
    "signature": "0xe5596f5f09f9b8a2daf26c81dedebeabbce354659b37e3b92174323b5bb3e0137e4a36f37c3d0f78554ef2b844d6789c534afc940073f9d3cefc13f930768ac11c",
    "signer": "0x6f40D540273018675C8d2260b467b08bAD4a9181",
    "userId": "779349060"
  }
}