{
  "manageEntity": {
    "action": "Update",
    "entityId": "149919577",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe2778b18375bc0965588fcd3004714472cfe79ffa4870424b4c8f339c3dbb24f",
    "signature": "0xdd0d314eb37425e1f7285cf0ba49ca185afa91a51f61da53163272f3172d8d3d5f3a34cc7ef804a04ea100cf1fe808bf91e4e960e5aa1cb40b6dd0394f2417511b",
    "signer": "0xCf3E6F9F4BF41C4e355E01484A92aaf61B6dd8a3",
    "userId": "149919577"
  }
}