{
  "manageEntity": {
    "action": "Update",
    "entityId": "494042903",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieratswdrtih3qc5p6abqbzlapvrc6zqvgpfng4gdh7blkjpgrsa4qpq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":345571335}]}}}",
    "nonce": "0xe7d543cc442fe08437c94578653847d1cd04a539712327c1003b900c33a24928",
    "signature": "0xfef065f38499844998ce910a3169c68e8b2e28258cfd4e67150b7bf61fcc6f11121ed1eacabff4c21d96fbc4e2bf02b87280426b4a52e25f2fc93c1a2f6ef8161b",
    "signer": "0x45208104454C28281a666c5BA485bae2Ecf1d6bF",
    "userId": "494042903"
  }
}