{
  "manageEntity": {
    "action": "Update",
    "entityId": "974403669",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x34ab5301e99384ef8a16af17c3b7dca7a839efbc2753d02c4c445bd4ee34b4ff",
    "signature": "0x1ba2fe7698030859601fa69e0a5bc5ae0367b9afb0d955f2c57c0e5c8e850d98511b081ca1bd536d14d01ced2267ddfc9e6e9a4df1dcdc192cf8c279c5bf4e601b",
    "signer": "0xaa223Ad6AD72c8f702876eb61AdbaE4F1f36EBA1",
    "userId": "974403669"
  }
}