{
  "manageEntity": {
    "action": "Update",
    "entityId": "272809645",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x97135219bca7b4580a042e2e1c10716e32010c9f74e3bcf48da1970514c65a83",
    "signature": "0x25181aadc52fae214c9d14a841bee71151b5508e9c7f256beabb9380a9b568d65d8b29b0fe18aca94fa5a6a1ba953b5d0a81f2322c5e4e77a9af0f6d92784a301c",
    "signer": "0x519f59B3efef0Df45928E79086d979C0C4A40Fee",
    "userId": "272809645"
  }
}