{
  "manageEntity": {
    "action": "Update",
    "entityId": "755967702",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf55f128c3410116b0955b9fd3e0a73ac716f3b952dcb84b5f3f44e0165551075",
    "signature": "0xd0020531d3f2ad00dba127282bfc8882d118a212f58f3a3334d331119e79cb5f554671f6e753b4fcf597f9777adb446f2d0099934dd6e4fb485671e3e64b5e8d1b",
    "signer": "0x1b3c5DcA6B827498da1070c8D4EA3206DD3F708A",
    "userId": "755967702"
  }
}