{
  "manageEntity": {
    "action": "Update",
    "entityId": "109867509",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe77751063ac2e047b3883e3944c6a088d3c6aacad27598d9746f9f2fd450242f",
    "signature": "0x9b74b9d8126bbb7e68c34ecafbdf1abcf76355071b1332ec6631d12acd408ce626ed393d5bac43f231ddf2eb3a64ab9abcd4eca3ed6db58c30cdaa60defe1aa71c",
    "signer": "0x5CC64B02265Dcf47361435fD77775D146B493471",
    "userId": "109867509"
  }
}