{
  "manageEntity": {
    "action": "Update",
    "entityId": "746653634",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierafxrgft4kwllxlb6upfhl4vde3srms4awndofcldg2qbkyxajhkrq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":571778935}]}}}",
    "nonce": "0x9323cfcf9751af55041bbd069a32cbba1ac2e5f027150475713b7733e54ca1d4",
    "signature": "0xfdba77f340b1885246d69ae77988644735d6a5d4be887dc987ad68fd393a1b497e6f7b700012fafa04a42cfb19e4a272313f0c315a33fce144181fac5dc879851c",
    "signer": "0xD76961dc6890cF5F569eF04a2385c6A55b9b6a3B",
    "userId": "746653634"
  }
}