{
  "manageEntity": {
    "action": "Update",
    "entityId": "739620943",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x138f6e628284e072aceead97ccc779d4f3403af0d88b63905ab9de2771d457ce",
    "signature": "0xf1d2e403590a920cf4542ceae452cb810f2d3908050c426b0ace1b7f92b4ede833038f624667880eda1d886491ffe4a1a285c7cce029973c71d1b1a9f0bfb2b91b",
    "signer": "0xebF123a3381552167d632a426876802d2d258D43",
    "userId": "739620943"
  }
}