{
  "manageEntity": {
    "action": "Update",
    "entityId": "547759105",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x916f2352fe2e768e0e61202bf4fd4958511d6c21eb4cff4ffed8cd907b86731a",
    "signature": "0xdabdef4cc369c482403ee4997ad445f6339589b25796cbae9adb141e421f2ad54e80aa460265f9d6a7c2e6744a2f66a9acbdf52dab828c8f9acab4848b89f3a11b",
    "signer": "0x769F48DB6CC422f3d621C93B56dCe321B1d60188",
    "userId": "547759105"
  }
}