{
  "manageEntity": {
    "action": "Update",
    "entityId": "750738320",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9f21aaa3d5f7aeded22b32ef6335ad550201d2c13f8a92dc87d1768fbb233845",
    "signature": "0x3105b86dcc7bb31f53cd14ddaeb6baee2f1b81a5340a85d269bd20163c31228109b574125200ba31000a3ca420eaa18df54f1a1aff7c6e07b105a05404085bb61c",
    "signer": "0xA39B4746f152A491644f4cc9E8b7658D756cE60E",
    "userId": "750738320"
  }
}