{
  "manageEntity": {
    "action": "Update",
    "entityId": "547618960",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x10727b9cdfc72e5b1d3ad1dfa8b5aea6647cee7df62e54dcb08fb0fd0ac7f7aa",
    "signature": "0xbb72ca83d90d45af419abd2e5fdefee75b920fb3e22c98712dee1468ef7c8722258054a891202b1ced6c66ed04983678ebe38a12de607bbf48648dc647dfc60d1b",
    "signer": "0x61979a2087663a855091adBd97d8de111D62E14B",
    "userId": "547618960"
  }
}