{
  "manageEntity": {
    "action": "Update",
    "entityId": "456087321",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierajopzcud4mctalbfvhelhsl2wxxwj5xzu7kcabjolx2bqcmjqjbuq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1053100257}]}}}",
    "nonce": "0x85b528b9b63a8845a89e2036d545bf81de415a62181f0a4417d8e1273777d415",
    "signature": "0x526e6133d8f7571f6abb4a60d07fa3a21d7206e5768ccd5e34d4f1934bcebe4c1e944c337d63423fcd5896cf67a3191d420a11040014148fbbe08ec43dd349741b",
    "signer": "0x14Cf60a0eab3a24fb7230Cc44B9a9b955d28E2D3",
    "userId": "456087321"
  }
}