{
  "manageEntity": {
    "action": "Update",
    "entityId": "668479312",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierazylxye2wb2pgwyqnc4l2qfejagikapk2glivfe7rakjs5s6yw3gq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1101286144}]}}}",
    "nonce": "0xc27df68d14e5c37b728ee7458568d69e00bcfec4ffae4865e4fc90f8857a2514",
    "signature": "0x028221ea7867856f34910ae55ce938781da8ddeb9162b9fa8092d250205e8f993082c8e3c2e0d829fc279e38f41caeaf325121d478464c1091abac8852ce75871c",
    "signer": "0x85B1B971C5fe67452C1B05674372A79112F62292",
    "userId": "668479312"
  }
}