{
  "manageEntity": {
    "action": "Update",
    "entityId": "759537297",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x23217ce9ad697cb81bbe73b87a23d666b2c6562234db2bdc5bc70cb55fdf801a",
    "signature": "0x4a4b3ce9f6da32a4ca04fa9f5ec3331188c0699d98e9d5fc374e3cd3bcd62c371bc685606658292b3380f48a184f2884dd07ca459113533d263ab1853f2aa7841b",
    "signer": "0x1523C2bDc77CB5d624d3C9b45C74D41322C6a5b1",
    "userId": "759537297"
  }
}