{
  "manageEntity": {
    "action": "Update",
    "entityId": "876735576",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf6b91518b67299eb973b8fc91fd783a6dc544266cc80bc0ce299d65b76271aac",
    "signature": "0xeac3d6738388bab25394a548b94da2ac37b475ef7f259f4120ef254816c0a1a52f0d087797c176539979221fd9e9aa2f850978c3aa87c214736bc8c23be594ec1c",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}