{
  "manageEntity": {
    "action": "Update",
    "entityId": "612535858",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierarxgr5e2aell6x3y2zq2truexxncnsmhixm4gd3bjvp44ijq7cdlq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":9733393},{\"type\":\"playlist\",\"playlist_id\":833781591}]}}}",
    "nonce": "0xb3054b5fde574f83630c6d25e94a1bdd2b5f364d4217fbac6015dec76c51d363",
    "signature": "0xf8a1bdd1f0013369f9513bbe7d2ab280a6c289aa00e68b9668cb8a5d7f3d875d721cf85757bb9cba8d7ef2bf48be94aa248980f668b44ce1e73952cc456caf451b",
    "signer": "0x473ac84E91B21C4fEEa96a0742db8bAeDC7F3A5e",
    "userId": "612535858"
  }
}