{
  "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": "0xb0237734736fb0ad065c297c3f9db38b33cf1f16c42d386b96fcac3bb8f966a2",
    "signature": "0x9a51b8eaaea2c66358e8a91cbe3c759582a31c6eb26247fbcf2742194a0d3e3e24d1c6c96a09dfa467274030505595548e25bf6cc5b117007e2cd723a10c66d91c",
    "signer": "0x75ACCD4160aaada206b4dCfA68E88187C9ba9A0b",
    "userId": "799571887"
  }
}