{
  "manageEntity": {
    "action": "Update",
    "entityId": "853608877",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x08e06b9c989cfba4aa4c6dd42f0ea2bee3dbedfe11b830810ef9ca100bddc5a2",
    "signature": "0xaacdb0f67fe4db5d55f22c15ddbf3cc2d627285f568cb666405248afe286845903faaa1cfe9609a24466280bef92826bf4b77b4852dd362a301a395996523a921c",
    "signer": "0x9AcBfC881E230200da95BC128EEc72F341a87e0c",
    "userId": "853608877"
  }
}