{
  "manageEntity": {
    "action": "Update",
    "entityId": "252241491",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xba828f0df947d24062aeae8daca3471f27bba350017b074d225b539d92ae488d",
    "signature": "0xf881be45e691544ef50266d888d67b7d26072ade64bb03dfd819fb1ee49eb226109bac3fe34dad77f80f0bfcaff0f9f515864ce2638a880eccd4c122596615371c",
    "signer": "0x5E60F6689395b705fc123728Ef210cf8c083De2B",
    "userId": "252241491"
  }
}