{
  "manageEntity": {
    "action": "Update",
    "entityId": "715573876",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraugggxe3osdjhp25pcqute2bdx5wssuafun3ah7lnmq3ernvfpoyq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":629154592},{\"type\":\"playlist\",\"playlist_id\":375592719}]}}}",
    "nonce": "0x8423b9e7a0c834b745248a68a6c263bff3e24f624f15bb4989a0ee62d4de1600",
    "signature": "0x29a52a361d8093fb9d6c1fd720721f1a71da48c1376b8ab5f33b28b7ba86d22341d0590aa3326c284e3e25ec9886b43fdb93bd2839e133fceebf2e13eb8037f01c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}