{
  "manageEntity": {
    "action": "Update",
    "entityId": "737351944",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera3tpvuxabh6ab6pet75x3ja2ju3wk2fpofgh32drdwpwranzyzxaa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":577693141},{\"type\":\"playlist\",\"playlist_id\":928118913},{\"type\":\"playlist\",\"playlist_id\":912312695}]}}}",
    "nonce": "0x6bd94fa5bfe62c9b53e78b93b64aa76e64d68c93f339054a8518118aad0abf26",
    "signature": "0x5ffe15811d64c5f07bdc067cd7adf3c008ee62536a5fb64f82e80c48e35d880427ba223b26dd4eca222785bc692ba6323be584b01d650213beac508f6d4f85171c",
    "signer": "0xD3477a5D42f26D7d97a9Ed213CF35Eb998C7b687",
    "userId": "737351944"
  }
}