{
  "manageEntity": {
    "action": "Update",
    "entityId": "574946590",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierav4keeayhnxr4dafxbtu7y2dkup6r53lkfnpuvep7l5zn7g4qdf3a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":293160636},{\"type\":\"playlist\",\"playlist_id\":1880516619}]}}}",
    "nonce": "0x32d91cc55de2c5e13c8e0e0e4442d5f850fd0805c37e80f78d030d323503729b",
    "signature": "0x79106bae7cdd2ecdee8c47c4dc786d8a79e7e47fd13a2cf294413365102c0d5518bdf2b64a552f829bea351d28f3de2955db483294b85d0c93e0c0fb50fcb50a1c",
    "signer": "0xdb1Ea9FBac04939eF3C86Be75877Fb0866979e7A",
    "userId": "574946590"
  }
}