{
  "manageEntity": {
    "action": "Update",
    "entityId": "53389",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierac4zniw7np5qui34hsixwhc7dhpeeocrhta6npdhqq3tsdfzkq4zq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":13280},{\"type\":\"playlist\",\"playlist_id\":13414},{\"type\":\"playlist\",\"playlist_id\":13573},{\"type\":\"playlist\",\"playlist_id\":14392},{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9a12fd28cbcb8a20f3a67afe64744bec1f03192b2365c24aed7c3df3f8889b3e",
    "signature": "0x3d4a1fabe7ba1819d315d7e99387cff54e666ebcdfaef03b1e1dc147bff30f676ccebeb674491433bb94b4a3001407467f3af551316ac87adb007c0eb489f2271c",
    "signer": "0xC496025347156571918B5e0F998629B3a2a8a649",
    "userId": "53389"
  }
}