{
  "manageEntity": {
    "action": "Update",
    "entityId": "325554867",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera56jiy5v7iovt4dmelmzwberzjsriw3emdu3f6avgn2koswqdadla\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":918542499},{\"type\":\"playlist\",\"playlist_id\":63873710}]}}}",
    "nonce": "0x389e9e6beb61bedc20fff4e9df501f58e28446cb5270ff06214c79e450159bef",
    "signature": "0x71a09c60fb19d657701c70024404a6e20e251c16bd2b584de9fbd03441b67907619b38233264615d4478987bf8fda6091077a44454d2898ef89ed81c52a0c25b1b",
    "signer": "0x4b402dCD6745d20b1A6e12626A6E2b97c8652E37",
    "userId": "325554867"
  }
}