{
  "manageEntity": {
    "action": "Update",
    "entityId": "356524192",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf7c608dd236dca2d4ec982c97f6a134b87674caca0d44267a28b93a0f92e32ec",
    "signature": "0x49c555dcfea6634f31225416bca5ff67e92d6f1f566d98ec5851f20ac742cedf7e6aad228d9abd0e49778003cafc18b9ef8cabed0513e51e618f0e54cdaabb851c",
    "signer": "0xCA7664B3985afC0197EA4AF85224A1C91364dBEc",
    "userId": "356524192"
  }
}