{
  "manageEntity": {
    "action": "Update",
    "entityId": "839952080",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdea42dd8f71e880c06970f5ffbf861486f851fe13c51f0c58e8fdec7c6f1ef89",
    "signature": "0xd5ee178e60bef1918ffdfc69372597efe81c53762b11cadd09f2689c71fd312440309748228aad5be8a41564b4f661c9c40721b777a322fea65bb247817229c21c",
    "signer": "0x6C57e78619868960ae112183fB15c54E40C2B831",
    "userId": "839952080"
  }
}