{
  "manageEntity": {
    "action": "Update",
    "entityId": "906055609",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x281555648b59349f1feeb18b77e47c62aa483abf503d4e408a5b2a63f4967e3b",
    "signature": "0x21ce2ab2dc31bbe1fc579d6dba1cde8cecc4bdd47af803e60e4f697b6b32061c3b330f340ae96602baeb897c8c358d896b6764609e4e4e933b146d79c66e34a21b",
    "signer": "0xce5780555C00072aD3D685A3067b4C930EE57f22",
    "userId": "906055609"
  }
}