{
  "manageEntity": {
    "action": "Update",
    "entityId": "820257716",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4fdf9102eac54585f950266cce6052c49647253733cbf78e921a8771ec29b0aa",
    "signature": "0x37ba8c000b3a14132c99bb73bead079c2ca80755686efc0785e7314b07b2a3447dfd3b393ef2108ffb47eaf78196cc7f5a03f398c9fac556a1198a99f522eb141c",
    "signer": "0xC3D7132e0492acFCD48339ED8998A1E34E575134",
    "userId": "820257716"
  }
}