{
  "manageEntity": {
    "action": "Update",
    "entityId": "799571887",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierarl4vqlh2teh2xef3g4e3yak7za7tpnu5l2qy56jlbls74tzgnovq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":442302854}]}}}",
    "nonce": "0x44e8d21a35fa7ee241a76633621ceaa17a45ded60dda11e22a7f90dd006b4dec",
    "signature": "0x208449a832af59bb37618ef3d75bf4e25335685388af0083f3472d677bb2c8797309c20ea9517615fc88d550b2e3827641bc7434015b62cb30b6640b5cf236671b",
    "signer": "0x75ACCD4160aaada206b4dCfA68E88187C9ba9A0b",
    "userId": "799571887"
  }
}