{
  "manageEntity": {
    "action": "Update",
    "entityId": "320708254",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierahtmzp6esh26prccdmsosduydf6revjix2lah2lsvk5aibtofrwza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":467581875},{\"type\":\"playlist\",\"playlist_id\":514613298},{\"type\":\"playlist\",\"playlist_id\":1947084324}]}}}",
    "nonce": "0x918670ec3f989cf6c6bd04c11fd911d1481447dd9d84cf3cb7bd08212565215c",
    "signature": "0x5696c0b5dd61437a9388bd696c49145e52d3fb0f0b37c73ccb9c08dbf189597a790697562f671a20c47656d9da8788274468bb9c54495c9353250daff6048f5f1b",
    "signer": "0x0Cf69629cA9d9D0b310755fe29469E02bD2D46a8",
    "userId": "320708254"
  }
}