{
  "manageEntity": {
    "action": "Update",
    "entityId": "300815705",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x09e1013d66482b735ee34949747454488ee9383acec0a52c4fa4936a21099cf8",
    "signature": "0x8f90680d2020340b770de683d095444b4d83fc89c06c1346a0ca69917ae105ba0f75789c63bd4e1659b7b2cb7e4daac39cf8a08ae0f39de0921a1c6aeb1911871c",
    "signer": "0x17E5Cd991203390519d2FC47aDbaC0DF4B27bBe3",
    "userId": "300815705"
  }
}