{
  "manageEntity": {
    "action": "Update",
    "entityId": "650710289",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierathzxci5hoxtkhy5geq7odkkalcb4wrxdvdkqwb36grlvpxmgfjea\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1636386538},{\"type\":\"playlist\",\"playlist_id\":1514192617},{\"type\":\"playlist\",\"playlist_id\":1647936231}]}}}",
    "nonce": "0x4c72a296a5189361db51568bb39b451ca1976059d08f047341640cae610520d4",
    "signature": "0x1c2dde4cf2c3acc6405274fdaf1459575f9f15fd2f9ef63e62929d5e6ee2e49e7eaec49fd75ed451a96e049fab6020975aeef05652bbc834c160773f6d7ea62c1b",
    "signer": "0xA76bb874Ea465ed9b8201008c0Dab4F17b244752",
    "userId": "650710289"
  }
}