{
  "manageEntity": {
    "action": "Update",
    "entityId": "575151774",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x46a1deb72d68783a2d8cdd700b4991e5f3c57c6a68e70b4cc3290d66aa0fda52",
    "signature": "0x8c0a23a3a6fbda466cbeefdc1fb3649bc59aaf33a71365be784c2602a214263a0356703becee28e106083ad32d39b748ffb13a4abfb19e0985aba05e39fb810c1b",
    "signer": "0x2FC8ee16470A60117603F84C8f2b6694A7678b35",
    "userId": "575151774"
  }
}