{
  "manageEntity": {
    "action": "Update",
    "entityId": "971578908",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd24afbcd24d15d4c697632b16732a08fbba90c6fad6030f017080377c14e6e71",
    "signature": "0x7af42cc00d584aac16fbdfa706c9a6ff194f0ab02c967f02e15466352cc8d5f3624abfad8f8cb840481f13e169595bfcf86ff7a4bdc42abbbb052147b401b5431b",
    "signer": "0x5e81D472A24C21185113077e9e77CF54C1f4876F",
    "userId": "971578908"
  }
}