{
  "manageEntity": {
    "action": "Update",
    "entityId": "323789212",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0af31731772e6eecac29943eab0c48376fea001dd3c598791a8cf8a49f4f9c52",
    "signature": "0xa89f7dff32eb1bdc5d36c955b6955b762f30d544b1ea16906e769ee1f0b5d2d816ac26b1bb8b6e27085fa21b8f264e7215817239df935af5db23a2764dbaa7b61c",
    "signer": "0xDF9352d1988F7140ad4167745251E23Fdb425be4",
    "userId": "323789212"
  }
}