{
  "manageEntity": {
    "action": "Update",
    "entityId": "953308750",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcfaac50c919c467d6c0a24c24d47c6919fd1b17658c551a1b663f2bab7276985",
    "signature": "0x01988d51abb67bbe66fe86556a1afb87a0f29111b84730617ccab9c3188b193954c9914c8aa26b3783c6ff2431ce2c8dd89667fca92ace844df119b3687a79221b",
    "signer": "0x1Cb865DdBA351F970220F715B0aC633F06fe38f7",
    "userId": "953308750"
  }
}