{
  "manageEntity": {
    "action": "Update",
    "entityId": "844048122",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x754d5eb0ac7cd6781a2be669609ef01f267d9612008d63307c561dfe114b9377",
    "signature": "0xb9a589265cc277ec6e6ab0be9a80754885bcf71d6a55686cae50d552803b684e1241413853b58a0ed9bf9df6ac6eea543c7d00177e5b2d63bde98f84dab6cf9f1b",
    "signer": "0x556efb0646548258329297fe036FE68a30805AC5",
    "userId": "844048122"
  }
}