{
  "manageEntity": {
    "action": "Update",
    "entityId": "875072625",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x555199eb7a7e13c01e1566843940393ba215dcfbd67d1f0b2b8450568825eb29",
    "signature": "0xe83efee0f010d81c30902432459a20b11298b1cee9490692254f8f192d4c4def2a0d0da63d7628528590bbffe491561d93dd56383ab0ca06d10260479ec3becb1b",
    "signer": "0x47e3E240A1A233Ec71A6C67239087CE35B149C09",
    "userId": "875072625"
  }
}