{
  "manageEntity": {
    "action": "Update",
    "entityId": "300815705",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x97f379e8a8235f5f217452a5f287681366b2e4ec83b157e471044eec5dc3ee1c",
    "signature": "0xf16e59ff93a8c19f0431973a1da4d4488bb6ed206058a9373adfb7426a92ef8756d779dbaf85355b57e2625f468abc86521750605e34c5df4ab1c8502bc6f8851c",
    "signer": "0x17E5Cd991203390519d2FC47aDbaC0DF4B27bBe3",
    "userId": "300815705"
  }
}