{
  "manageEntity": {
    "action": "Update",
    "entityId": "419596826",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5c64ddeaae3ca370d709fc26bf08575f747171f47b6148922037790ba309b185",
    "signature": "0x79a0247dce83288d738be9a87050869fe2d3d686b355b3a64ff9e03eddd7bd9e01fe44e3c7f59eaf4443a2686f3b005e508dc24e7df0160022a29e99b63df35c1b",
    "signer": "0x8E172f61ee2C8043C1511347070FDFe560944Cb4",
    "userId": "419596826"
  }
}