{
  "manageEntity": {
    "action": "Update",
    "entityId": "511698349",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieracxgqe44y6x4rpydh2sx4q2zdjlbicez7dhcldfho6lhg54jmpv3q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":413945353},{\"type\":\"playlist\",\"playlist_id\":1999015122},{\"type\":\"playlist\",\"playlist_id\":1895927437}]}}}",
    "nonce": "0x5f7378f5b86a11234beafbf8711f478edde67b853e3609d06344e4636227b35b",
    "signature": "0x46c61549a452d5ace960e688e71cffd2beb6dce38bfff21b7bc0e26cdef7e2772f1267b9e1fdd66d2799dc30f31290aa04183116e95c7621e3d7b9d05e2a0ea21b",
    "signer": "0x10bb2D17C512CF574a9c388986b5f2cDbE1dC22A",
    "userId": "511698349"
  }
}