{
  "manageEntity": {
    "action": "Update",
    "entityId": "950485788",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8c5c752b7994f2d087b98cedfa4e86d72842a49a4de5903dc69ea07d2b51179a",
    "signature": "0xa1b3b69eb93012734f218bfb18d0af33a080a2ddfbda072607d0c67a25e482264d31b16a39b1b16b9b21fc907356ccc681af1385a361e152808167c33cdd2a7b1c",
    "signer": "0x6CF29C21c9C0b405C773f3605658C095Af4c28EF",
    "userId": "950485788"
  }
}