{
  "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": "0x43832810ef89db0b164464678f8e0556b1fb370c970c9060459aca74a0c4883f",
    "signature": "0x11eae23dab02d26e9013271bbe76e360a4f169586a0a7e04ebed86e2818f83d47f25f6e8fe4bd1180460bc8d05ac19d75476ab540d77a526d574ae823b86260e1c",
    "signer": "0x14Cf60a0eab3a24fb7230Cc44B9a9b955d28E2D3",
    "userId": "456087321"
  }
}